cooperative task. The data show that clerical workers differ from college students in overall cooperation rates, strategy adoption … and use of punishment opportunities. Students cooperate more than workers. Cooperation increases in both subject pools … defection, and more likely to select strategies of conditional cooperation. Finally, students are more likely than workers to …

Explicit and implicit incentives and opportunities for mutually beneficial voluntary cooperation co-exist in many … crowding out of voluntary cooperation even after incentives have been abolished. This crowding out occurs also in repeated … voluntary cooperation while exposed to incentives. Overall, our findings show that the behavioral consequences of explicit …

There is continuing debate about what explains cooperation and self-sacrifice in nature and in particular in humans …

employed in cooperatives.We gathered incentive-compatible measures of risk preferences, time preferences, reciprocity, altruism …

We investigate how group boundaries, and the economic environment surrounding groups, affect altruistic cooperation and … harm those who defect, encouraging a norm of cooperation towards the group. Adding competition between groups causes even … stronger in-group cooperation, but also a qualitative change in punishment: punishment becomes antisocial, harming cooperative …

This paper experimentally examines how religious festivals and the degree of religiosity affect cooperation and … religious festivals other than the normal daily prayers. The overall results show no differences in cooperation or altruistic … differences in beliefs about others contributions. By and large, this indicates the importance of conditional cooperation …

cooperation in the presence of "multi-directedness," whereby people's preferences depend on their psychological motives. People …

incentives to switch affiliation and/or location in a dual environment, where potential gains from in-group cooperation for the …